Windmill generator



FIG. 1 is a front elevational view of a windmill generator showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image of the side shown; and

FIG. 5 is a bottom plan view thereof on a reduced scale. 

The ornamental design for a windmill generator, as shown and described. 